package org.csmz.class2333;

public class Example04 {
    public static void main(String[] args){
        String username1 = "heima12345!";
        String username2 = "Heima12345!";
        System.out.println("字符串" + username1+"是否以heima开头："+ username1.startsWith("heima"));
        System.out.println("字符串"+username1+"是否以!结尾：" +username1.endsWith("!"));
        System.out.println("字符串"+username1+"是否为空：" + username1.isEmpty());
        System.out.println("字符串"+username1+"是否包含字符串123：" + username1.contains("123"));
        System.out.println("字符串"+username1+","+username2+"内容是否相同：" + username1.equals(username2));
        System.out.println("忽略大小写判断字符串"+username1+","+username2+
                "内容是否相同："+ username1.equalsIgnoreCase(username2));
        System.out.println("按Unicode比较字符串"+username1+","+username2+"的大小" + username1.compareTo(username2));
    }
}
